Unit 5 Practice Test

Which expression is equivalent to 2x² + (4x - 6x²) + 9 - (6x +3)?

• -4x² - 2x + 12
• -4x² - 2x + 6
• -10x + 6
• 18x +12

What is the width of a rectangular pool with an area of 30x³ + 9x² – 6x when the length is 3x?

• 10x² + 3x – 2
• 10x⁴ + 3x³ – 2x
• 27x² + 12x - 9
• 10x³ + 3x² – 2

Simplify the expression 3(x-4) - (x-5)

• 4x - 7
• 4x - 17
• 2x - 7
• 2x + 7

Ashlynn is making a banner in the shape of a triangle.  She wants to outline the banner with a decorative border.  How long will the border be in terms of b?

• 21b² + 12b - 8
• 33b² - 24
• 24b² - 8b - 8
• 9b² + 24b - 8

Which expression is equivalent to: 2m(3/2m + 1) + 3(5/3M - 2)?

• 3m² + 5m - 1
• 3/4m² + 23/9m - 6
• 3m² + 7m - 6
• 3/4m² +5/9m - 1

Which expression is equivalent to (7g² + 9g) - (2 - 9g) + 4?

• 7g²+18g+2
• 7g²+2
• 25g+4
• 7g² +18g+6

Simplify:

• 15x² + 2x
• 4x² + 2
• 4x + 5
• 4x² + 2x

What is √256/4 expressed in simplest radical form?

• 8
• 2√2
• 28
• 7√5

Which expression represents the volume of the following rectangular prism where the length is 4x²y³, the height is 2x⁴, and the width is x³y.  (V = lwh)

• 8x⁹y⁴ units cubed
• 6x⁹y⁴units cubed
• 16x⁶y³  units cubed
• 8x²⁴y³ units cubed

If the area of a rectangular garden is 20x² – 25x, what is the length if the width is 5x?

• 4x + 5
• 15x – 20
• 15x² + 20x
• 4x – 5